Classification
530 - Physics
792
515 - Analysis
576
004 - Data processing & computer science
543
620 - Engineering & allied operations
354
700 - The arts; fine & decorative arts
327
000 - Computer science, information & general works
293
600 - Technology
260
333 - Economics of land & energy
233
006 - Special computer methods
218
610 - Medicine & health
205
514 - Topology
166
516 - Geometry
159
900 - History & geography
152
536 - Heat
135
380 - Commerce, communications & transportation
124
519 - Probabilities & applied mathematics
116
330 - Economics
114
500 - Natural sciences & mathematics
111
363 - Other social problems & services
107
540 - Chemistry & allied sciences
105
005 - Computer programming, programs & data
104
576 - Genetics & evolution
97
140 - Specific philosophical schools
91
621 - Applied physics
90
511 - General principles of mathematics
84
512 - Algebra
77
580 - Plants (Botany)
77
003 - Systems
68
658 - General management
59
629 - Other branches of engineering
57
510 - Mathematics
49
570 - Life sciences; biology
41
370 - Education
39
551 - Geology, hydrology & meteorology
39
541 - Physical chemistry
38
100 - Philosophy & psychology
36
320 - Political science
35
300 - Social sciences
33
340 - Law
33
720 - Architecture
31
414 - Phonology & phonetics
29
531 - Classical mechanics; solid mechanics
29
612 - Human physiology
29
304 - Factors affecting social behavior
27
571 - Physiology & related subjects
26
630 - Agriculture & related technologies
26
539 - Modern physics
24
400 - Language
23
535 - Light & infrared & ultraviolet phenomena
23
410 - Linguistics
22
more ...